/**
 * baidu push
 */
module.exports = function() {
  const script = `<script type="text/javascript">
                  ;(function() {
                    var bp = document.createElement('script')
                    var curProtocol = window.location.protocol.split(':')[0]
                    if (curProtocol === 'https') {
                      bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'
                    } else {
                      bp.src = 'http://push.zhanzhang.baidu.com/push.js'
                    }
                    var s = document.getElementsByTagName('script')[0]
                    s.parentNode.insertBefore(bp, s)
                  })()
                </script>`

  return this.theme.baidu_push ? script : ''
}
